Spying on critical infrastructure is a particular vulnerability and has increased significantly since the start of the war. This should be seen as part of Russia's hybrid warfare, according to security expert Dr. Frank Umbach. However, the step from spying to actual attacks is a further, new level of escalation.
Dr. Frank Umbach on Russian espionage in Germany Dr. Frank Umbach on Russian espionage in Germany
Studio interview with Dr. Frank Umbach, security expert and CASSIS Fellow, on Russian espionage in Germany.